PhosLock is the benchmark German made ferric hydroxide media for total phosphate removal in all aquaria. Used all over the world, it is the product of choice for many critical water purity applications.

PhosLock is the benchmark German made ferric hydroxide media for total phosphate removal in all aquaria. Used all over the world, it is the product of choice for many critical water purity applications.

PhosLock permanently binds phosphates. With regular use of PhosLock any aquarium fresh or salt, reef or planted,will stay much cleaner and less maintenance labor intensive!